| ORIF | open reduction with internal fixation |
|---|---|
| RIC | right internal carotid [artery]; Royal Institute of Chemistry |
| RIMA | right internal mammary artery |
| RITA | Randomised Intervention Treatment of Angina [UK]; right internal thoracic artery |
| RVID | ventricular internal dimension |
| postsynaptic membrane | That part of the plasma membrane of a neuron or muscle fibre with which an axon terminal forms a synaptic junction; in many instances, at least part of such a small postsynaptic membrane patch shows characteristic morphological modifications such as greater thickness and higher electron-density, believed to correspond to the transmitter-sensitive receptor site of such synapses. (05 Mar 2000) |
|---|---|
| cutaneous layer of tympanic membrane | The thin layer of skin on the external surface of the tympanic membrane. Synonym: cutaneous layer of tympanic membrane. (05 Mar 2000) |
| presynaptic membrane | That part of the plasma membrane of an axon terminal that faces the plasma membrane of the neuron or muscle fibre with which the axon terminal establishes a synaptic junction; many synaptic junctions exhibit structural presynaptic characteristics, such as conical, electron-dense internal protrusions, that distinguish it from the remainder of the axon's plasma membrane. See: synapse. (05 Mar 2000) |
| cytoplasmic membrane | <cell biology> The membrane that surrounds a cells cytoplasm, separating it from the environment. It consists of a double layer of phospholipids and has proteins embedded in it. (09 Oct 1997) |
| primary egg membrane | See: egg membrane. (05 Mar 2000) |
| proligerous membrane | A mass of epithelial cells surrounding the ovum in the ovarian follicle. Synonym: discus proligerus, ovigerus, proligerous disk, proligerous membrane. Origin: NA (05 Mar 2000) |
| Henle's fenestrated elastic membrane | elastic laminae of arteries |
| Henle's membrane | The transparent, nearly structureless inner layer of the choroid in contact with the pigmented layer of the retina. Synonym: basal lamina of choroid, basal layer of choroid, Bruch's membrane, Henle's membrane, lamina vitrea, vitreous lamella, vitreous membrane. (05 Mar 2000) |
| prophylactic membrane | A layer of pus cells lining an abscess cavity which have not yet autolyzed. Synonym: prophylactic membrane. (05 Mar 2000) |
| Scarpa's membrane | The membrane closing the fenestra cochleae or rotunda. Synonym: membrana tympani secundaria, Scarpa's membrane. (05 Mar 2000) |
| schneiderian membrane | The mucous membrane lining the nasal cavity. (12 Dec 1998) |
| Schultze's membrane | The specialised olfactory receptive area that includes the upper one-third of the nasal septum and the lateral wall above the superior concha; it is lined with olfactory mucosa. Synonym: regio olfactoria tunicae mucosae nasi, olfactory region of tunica mucosa of nose, Schultze's membrane. (05 Mar 2000) |
| Heuser's membrane | A layer of cells delaminated from the inner surface of the blastocystic cytotrophoblast and from the envelope of the primary yolk sac during the second week of embryonic life. Synonym: Heuser's membrane. (05 Mar 2000) |
| secondary egg membrane | See: egg membrane. (05 Mar 2000) |
| secondary tympanic membrane | The membrane closing the fenestra cochleae or rotunda. Synonym: membrana tympani secundaria, Scarpa's membrane. (05 Mar 2000) |